Whilst OpenAI even now retains prevalent law trademark rights in “GPT,” the lack of a trademark registration opens the door for other entities to make use of the expression freely, most likely diluting OpenAI's manufacturer recognition and market place—anything opponents previously are executing (as pointed out in the USPTO’s decision), https://eduardoppmie.techionblog.com/29646644/rumored-buzz-on-trade-gpt-reviews-copyright